Roughing Solid Carbide Drills Bits

Roughing Tialn coated Solid Carbide Drills Bits for Hardened Steel Quick Detail: 0.6-0.8um Mirco grain size solid carbide rod TIALN Coating (Black),TISIALN(Copper) Made by 5 AXIS CNC grinder Checked by Zoller Inspection Equipment Workpiece upto HRC50 1 piece packing. DIN1897 Type Description: Micro Grain Szie 0.6-0.8um, Wc carbide rod with high tenacity,with high quality TiAlN coating,getting long tool life,high Feed Drills,reduce time of changing cutters,improving efficency